MemoryUtil: Fix formatting

clang-format really *wants* the two empty lines to be removed;
otherwise, it will always flag MemoryUtil as needing formatting changes
which is an annoyance when it is used as a git filter driver.

Source/Core/Common/MemoryUtil.h

@@ -9,7 +9,6 @@
 
 namespace Common
 {
-
 void* AllocateExecutableMemory(size_t size, bool low = true);
 void* AllocateMemoryPages(size_t size);
 void FreeMemoryPages(void* ptr, size_t size);